Armchair



FIG. 1 is a front perspective view of an armchair;

FIG. 2 is a front view of the armchair;

FIG. 3 is a rear view of the armchair;

FIG. 4 is a right side view of the armchair;

FIG. 5 is a left side view of the armchair;

FIG. 6 is a top view of the armchair;

FIG. 7 is a bottom view of the armchair;

FIG. 8 is a rear perspective view of the armchair; and,

FIG. 9 is a bottom perspective view of the armchair. 

CLAIM The ornamental design for an armchair, as shown and described. 